L.O PRESSURE IS ESSENTIAL FOR EFFICIENT WORKING OF THE ENGINE. IT HELPS TO MAINTAIN AN OIL WEDGE BETWEEN THE BEARINGS AND THE CRANKPIN AND JOURNAL.
L.O PRESSURE IS GOOD WHEN THE ENGINE OIL IS NEW AND THE FILTERS ARE RENEWED. BUT AS THE ENGINE’S RUNNING HOURS INCREASE, THE L.O DETERIORATES AND THE FILTER WILL CHOCK SLOWLY LEADING TO DECREASE IN L.O PRESSURE. BUT THERE ARE OTHER ABNORMAL FACTORS ALSO TOO, THESE ARE :-
- DECREASE IN L.O LEVEL IN SUMP.
- L.O PUMP RELIEF VALVE LEAKING.
- L.O COOLER CHOCKED.
- L.O LINE CHOCKED.
- L.O LINE DAMAGE.
- NOZZLES INSIDE THE SUMP TO LUBRICATE AND COOL THE GEAR DRIVE WORN OUT.
- IF PISTON COOLING BY NOZZLE IS PROVIDED THEN CHECK THE SPRING. IF TOO WEAK SPRING THEN IT MUST BE CHANGED.
- BEARING DAMAGED.
- JACKET WATER GETTING MIX WITH L.O.
- IF NOZZLE COOLING IS BY DIESEL OIL , THEN IF DIESEL OIL LEAKS INTO SUMP IT WILL DECREASE THE L.O PRESSURE.
- THE L.O PRESSURE SENSOR MAY BE FAULTY.